Cryptosystems based on reproducible random sequences

Abstract

In order to have a completely secure cryptographic system, one has been looking for a system that is as unconditionally secure as the One Time Pad (One Time Pad) but without its key distribution problem. A cryptographic system is disclosed herein, which implements a cryptographic process based on a random sequence generator (1), generating a random key as long as the data to be processed for the encryption process (2) or decryption process (3). The random sequence generated by the random sequence generator (1) is completely random, which is perfectly reproducible for a person with the correct random transition map (4) and seed (5). Therefore, we have a very strong cryptosystem with no key distribution problem. The cryptographic system even allows an unconditionally secure communication channel over a network. Such cryptographic systems can be implemented on very different hardware like smart cards even with limited computing power.

Description

technical field [0001] The present invention is in the field of cryptographic processes and devices. Cryptography is the technique used to encrypt data (also known as encoding) or to decrypt encrypted data (also known as decoding). Although the technology has long been used in the military and diplomatic spheres, it has now expanded into the public sphere and the commercial world. It is now economically critical to have strong and secure cryptographic systems to protect business data and banking communications. Background technique [0002] Before exposing the prior art, definitions of some technical terms that I will use in this document will be given. These definitions shall apply to the entire document (description, claims, abstract). [0003] The term "data" refers to all kinds of information, knowledge, texts, messages, documents, diagrams, numerical results, pictures, images, combinations of some or all of them, or capable of being expressed, transcribed or construc...

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Problems solved by technology

However, said cryptosystem is usually time-consuming, so in practice it is only used to encode very short data (e.g. small true random keys), long data is encoded using the previously described cryptosystem (using the sent small random key) to encode

[0018] However, it should be known that, in contrast to the one-time pad, public-key cryptography is not unconditionally secure, since it is impossible to prove that no one has (secretly) solved the mathematical problem on which the cryptosystem is based

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